Browse Forums Buying Land Re: Slope land 2Nov 01, 2017 11:02 am Hi Sahil, If the land is slop land then it is called overflow land. Overland flow is excess rainfall runoff from homes, driveways and other surfaces. Overland flow flooding is water that runs across the land after rain, either before it enters a creek or stream, after a creek or stream breaks its banks, or after rising to the surface naturally from underground. Overland flow flooding tends to affect localized areas rather than the whole city at once. It really depends on how incline is you land. You might have to do hydraulic assessment done which is performed by engineer and will cost you around $2000-$3000. You might need retaining wall if you are building home on slab. We bought a land that is little bit incline and had to do hydraulic assessment and have retaining wall. Hydraulic assesment cost use $2700 and retaining wall cost us around $6000. Hope this helps. Need advice on the backyard plan above. Should I excavate and cut all of the dirt to level with the house slab or semi-excavate as per photo above? Both left and right… 0 24875 Hi All, We have recently purchased a sloping block (3.5m fall building envelope, 6m overall). Just wondering if you know of any good builders that you would recommend for… 0 1776 A survey must’ve completed by a certified surveyor. This form part of every DA requirement 3 223632 |